Conditions For Clearing DTC

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The DTC will clear current status when the voltage is less than 15.5 volts for 1.2 seconds.
A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
Use the ON-Board clearing DTCs feature.
Use a scan tool.